EUVD-2026-56743
GHSA-3j5q-86h5-5hj9
Severity by source
AV:L/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H
AV:L and PR:H confirmed by description requiring authorized local attacker with elevated credentials; full C/I/A impact reflects total system compromise potential consistent with SSVC Technical Impact: total.
Primary rating from Vendor (microsoft).
CVSS VectorVendor: microsoft
CVSS:3.1/AV:L/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H
Lifecycle Timeline
3DescriptionCVE.org
Numeric truncation error in Windows DNS allows an authorized attacker to elevate privileges locally.
AnalysisAI
Privilege escalation in Windows DNS affects a broad range of Windows 10, Windows 11, and Windows Server releases through a numeric truncation error (CWE-197) in the DNS component. An authorized local attacker already holding high-privilege credentials can exploit this flaw to achieve full compromise of confidentiality, integrity, and availability on the affected host. …
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Attack ChainAIDerived
Hypothetical attack flow derived from CVE metadata
Vulnerability AssessmentAI
| Exploitation | Exploitation requires local, interactive or session-level access to the target system with high-privilege (administrator-level) credentials, as confirmed by the CVSS vector AV:L/PR:H. … Additional conditions and limiting factors are described in the full assessment. |
| Risk Assessment | The CVSS 6.7 base score correctly reflects a constrained attack surface: AV:L limits exploitation to local access only, and PR:H mandates that the attacker already holds administrator-level credentials - both significant prerequisites that eliminate opportunistic remote exploitation. … Full risk analysis with EPSS, KEV, and SSVC signal comparison available after sign-in. |
| Exploit Scenario | Full exploit scenario with step-by-step reproduction available after sign-in. |
| Remediation | Apply the Microsoft security update for the applicable Windows version as documented in the MSRC advisory at https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-65798. … Detailed patch versions, workarounds, and compensating controls in full report. |
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Same weakness CWE-197 – Numeric Truncation Error
View allSame technique Information Disclosure
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External POC / Exploit Code
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